US1727879A - Retractor - Google Patents

Description

Sept. 10, 1929. Q Es HODUCK ET AL 1,727,879

RETRACTOR Filed March 25, 1929 gigi Patented Sept. 10, 1929.

UNITED STATES CHARLES E. HODLICK AND OTTO KELLER, CHICAGO, TLLINOIS, ASSIGNORS TOy PATENT OFFICE;

SHARP & SMITH, INC., OF CHICAGO, ILLINOIS, .A CORPORATION OF 'Il'.LTItOIS.`

RETRACTOR.

Application filed March 25, 1929. Serial No. 349,780.'

rlhis invention relates to improvements in retractors and is here shown, for example, as embodied in a retractor especially adapted tor bladder operations.

One of the Yfeatures of our invention is the provision of a spring-pressed reti-actor that can be very easily and quickly adjusted and also iirmly and securely set in any desired position. Means are provided for giving the retractor, very quickly, either coarse or fine close adjustments.

Other ieatures and advantages of oui` invention will appear more fully as we proceed with our speciication.

In that torni of device embodying the features of our invention shown in the accompanying drawings*- lfigure 1 is a plan view; Fig. 2 is an enlarged view taken as indicated by the line 2 ot Fig 1; Fig. 3 is a similar view showing the nuts in di'l'lcrent positions; and Fig. 4 is a view in perspective of the end of one of the jaws of the retractor.

As shown in the drawings, the retractor includes the two jaws 10, 10, pivoted at 11. Numeral 12 indicates a spring urging the jaws apart. The ends of the jaws may be equipped with any desired hooks or members, here shown as the pivoted wire-retain ing hooks 13, 13.

Numeral 14 indicates a threaded rod pivotally attached to one jaw 10, as indicated by 15. The other jaw is provided with a block 16 pivotally attached thereto, as indicated by 17. The block 16 is provided with a hole 16a through which the threaded rod is free to slide and the edges of the hole at both ends are beveled, as indicated by 161.

The threaded rod 14 is provided with a loose nut on each side of the block 1G. Since these loose nuts are similar, only one need be described in detail. Each nut includes 'a milled finger part 2O holding the outer ends o'l` two members 21 having their inner ends separable and interiorly threaded, as indicated by 21C. The inner ends of these members are also beveled on the outside, as indicated by 21a, said beveled portions adapted to be engaged by the beveled edge of the hole 16a when the nut is pushed against the block; Thefouter ends of the members 21 are slightly enlarged, as indicated by 21h, saidk enlargementsr being securedgunder an inwardly turned flange202L on the part 20. The parts 21 are held by the part 2O so that their inner threaded ends are separable and may be moved away from'the threads on the rod, lpermitting the entire nutto slide on the rod, or moved toward it tobringsuch ends into threaded engagement with the rod. f Although the innerfends ot' the parts 21 may be separated enough to permit the/nut to slide on the rod, they are always held close enough together 'so that when the nut is pushed against the block 16, the bevels on these ends will engage the beveled edge of the hole in the block, thus forcing the ends toward the rod to bring the threads on the inner surface thereof into threaded engagement with the rod. No relative rotary movement between the member 20 and the mem bers 21 is permitted. n f

ln operation, either nut may be slid on the rod 14 until it engages ythe block, when it will be thrown into threaded engagement with the rod 1st and said rod held against movement in one direction, except as the nut is screwed on the rod. Both nuts are shown in threaded engagement with the rod in Fig. 2 and the rod is firmly held and can be released only by unscrewing one of the nuts. As soon as one of the nuts is unscrewed away from the block, the parts 21 may be separated, thus permitting the nut to slide on the rod and afford a quick adjustment of the retractor.

y While we have shown and described certain embodiments of oury invention, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made without departing from the spirit and scope o1 the invention as disclosed in the appended claims, in which it is our intention to claim all novelty inherent in our invention as broadly as possible, in view of the prior art.

What we regard as new, and desire to secure by Letters Patent, is:

1. A retractor including; ytwo pivoted jaws; a threaded rod pivotally attached to one jaw; a block pivotally attached to the other jaw and provided with a hole, the threaded rod slidably extending through said hole, the edge of said hole at one end being beveled; and a loose nut on the threaded rod having separable interiorly threaded members with their endsy beveled, said beveled ends adapted to be forced toward the rod into threaded engagement therewith when pushed against the beveled edge of the hole in the block.

2. A retractor including; two pivoted jaws; a threaded rod pivotally attached to one jaw; a block pivotally attached to the other jaw Vand provided with a hole, the threaded rod-slidably extending through said hole, `the edges of said hole at both endsbeing beveled; and a loose nut on the threaded rod at each kside of the block, each nut having separable inteliorly threaded members with their ends` beveled, said beveled ends adapted to ybe forced towardthe rod intoy threaded engagementtherewith when pushed against thev beveled edge ofthe hole in the block. Y

In witness whereof, we have hereunto set our hands this 23rd day of March, 1929.

CHARLES E. HODLICK. OTTO KELLER.

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